Capturing mobile underwater pseudonoise synchronous signal using multi‐strategy in waveform domain
Electronics Letters, 2023 Capturing pseudonoise (PN) synchronous signals is an important issue in spreading spectrum underwater acoustic communication. In this letter, local waveform domain information is combined with multi‐strategy to enhance the Doppler tolerance of ...
Yaohui Hu +3 more
doaj +1 more source
Oxygen isotope geochemistry of the second HSDP core [PDF]
, 2003 Oxygen isotope ratios were measured in olivine phenocrysts (~1 mm diameter), olivine microphenocrysts (generally ~100–200 µm diameter), glass, and/or matrix from 89 samples collected from depths down to 3079.7 m in the second, and main, HSDP core (HSDP-2)
Eiler, John M. +2 more
core +1 more source
Lighting as a Circadian Rhythm-Entraining and Alertness-Enhancing Stimulus in the Submarine Environment [PDF]
, 2006 The human brain can only accommodate a circadian rhythm that closely follows 24 hours. Thus, for a work schedule to meet the brain’s hard-wired requirement, it must employ a 24 hour-based program.
Bullough, J. D. +4 more
core +1 more source
Data-driven Autonomous Decision-making Method for the Effective Position of AUV Torpedo Attacks
水下无人系统学报, 2022 Autonomous decision-making capability is a distinctive feature that distinguishes unmanned undersea vehicles from manned platforms. This capability is characterized by a short autonomous decision-making time, high decision-making accuracy, and executable
Li-qiang GUO +3 more
doaj +1 more source
Effect of topography on subglacial discharge and submarine melting during tidewater glacier retreat. [PDF]
, 2017 -We explored secular variations in subglacial discharge and submarine melting with an idealized model -Subglacial discharge increases as tidewater glaciers retreat along retrograde beds -Submarine melting depends on subglacial discharge and ...
Amundson +51 more
core +1 more source
Ground Noise Survey at a Proposed Submarine Test Facility on Lake Travis [PDF]
, 1987 We conducted a brief survey of ground noise at a proposed submarine test facility on Lake Travis, northwest of Austin, Texas. The purpose of the survey was to find out the nature and level of the background seismic noise on the bottom of the lake at the ...
Nakamura, Yosio +2 more
core +1 more source
Geofluids, 2022 Marine vertical cable seismic (VCS) collects seismic waves by hydrophone array vertically suspended in seawater to prospect the offshore geological structure and monitor the reservoir.
Linfei Wang +5 more
doaj +1 more source
In-field entanglement distribution over a 96 km-long submarine optical fibre [PDF]
, 2018 Techniques for the distribution of quantum-secured cryptographic keys have reached a level of maturity allowing them to be implemented in all kinds of environments, away from any form of laboratory infrastructure.
Bo, Liu +17 more
core +5 more sources
Line spectrum extraction method based on hidden Markov model
Electronics Letters, 2021 To solve the difficult problem of line spectrum detection with a low signal‐to‐noise ratio, a line spectrum extraction algorithm based on a hidden Markov model (HMM) is proposed.
Kai Ma +4 more
doaj +1 more source
Mangarara Formation: exhumed remnants of a middle Miocene, temperate carbonate, submarine channel-fan system on the eastern margin of Taranaki Basin, New Zealand [PDF]
, 2009 The middle Miocene Mangarara Formation is a thin (1–60 m), laterally discontinuous unit of moderately to highly calcareous (40–90%) facies of sandy to pure limestone, bioclastic sandstone, and conglomerate that crops out in a few valleys in North ...
Armstrong BD +25 more
core +2 more sources